CommFront USB-232-1+TTL33-232-1 User manual

Revision: A1.3 The design and specifications are subject to change without notice for improvement www.CommFront.com
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INTRODUCTION
This USB  TTL 3.3V converter is a port-powered bi-directional USB to TTL/CMOS 3.3V converter,
which can be sed to convert any standard f ll-d plex USB port into a f ll-d plex TTL 3.3V port and
vice versa. The nit is powered from the USB port and it s pports data a to-sensing & self-adj sting,
and therefore, no ba d rate setting is req ired. The nit ses the latest FTDI chipset and is f lly
compatible with Windows 10/8/7/Vista/XP/Server2008 /2003/2000/98 (32-bit), Windows
10/8/7/Vista/XP/Server2008/2003 (64-bit), Win CE, Mac, and Lin x. Note: the latest drivers (chipset
FT232B) are available at http://www.ftdichip.com/drivers/vcp.htm.
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FEATURES
•Adds one TTL 3.3V port to yo r USB port.
•S pports 300 to 115,200 ba d (a to-sensing and self-adj sting).
•
S pports Windows 10/8/7/Vista/XP/Server2008/Server2003/2000/98 (32-bit), Windows 10/8/7/
Vista/XP/Server2008/Server2003 (64-bit), Win CE, Mac, and Lin x.
•S pports remote wake p and power management.
•Pl g and play (hot-pl ggable, data format a to-sensing and self-adj sting).
•Port-powered, no external power req ired.
•No IRQs req ired, no IRQ conflicts.
•S rface Mo nt Technology man fact red to RoHS and ISO-9001 standards.
•Safety: Strictly certified by SGS/TUV (Cert no. SGS - EM2008/20060C; EM/2008/20061C; TUV
- SG-CE-090012).
•5-year man fact rer’s warranty.
■ SPECIFICATIONS
Compatibility: USB 2.0 (backward compatible) and TTL/CMOS 3.3V level
Power So rce: From USB port
C rrent Cons mption: Less than 100mA
Ba d Rates: 300 to 115,200bps (a to-sensing and self-adj sting)
Distance: USB side: 10ft (3m); TTL side: 10ft (3m)
Connectors: USB side: Type A female; TTL side: DB-9 male;
Termination board: DB-9 female and a 3-way terminal block
Dimensions (HxWxD): 0.63 x 1.3 x 5.5 in (16 x 32 x 140 mm) (excl ding cable)
Cable Length: 3.3 ft (1 m)
Weight: 3.8 oz (109 g)
Operating Temperat re: 32ºF to 95ºF (0ºC to 35ºC)
Operating H midity: Up to 90% RH (no condensation)
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PIN ASSIGNMENT
TTL Side (DB-9 Male Connector / Terminal Block):
DB-9 Pin: 1 3 5
Terminal Block: TX RX GND
F nction: TTL OUT TTL IN GND
Termination Board:
•The n mbers on the left indicate the pin assignment of DB-9
male connector (TTL side).
•TX is the TTL O tp t, RX is the TTL Inp t.
USB  TTL 3.3V Converter
Part Number: USB-232-1+TTL33-232-1 Comm nications made easy

Revision: A1.3 The design and specifications are subject to change without notice for improvement www.CommFront.com
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CONNECTIONS
(FIGURE 1: USB-TTL 3.3V CONVERTER CONNECTION DIAGRAM)
■ TTL SIGNAL LEVELS
TTL Inp t TTL O tp t
High (>2.0V) High (3.3V)
Low (<0.8V) Low (0.0V)
■ TROUBLESHOOTING
•
Make s re that the USB-TTL3.3V converter is connected to yo r USB port, and the driver is
installed correctly (as shown below); otherwise, please reinstall the driver (refer to
https://www.commfront.com/pages/usb-driver-installation-guide for details).
•Perform a loopback test by sing CommFront’s 232Analyzer software: Connect a USB-TTL3.3V
converter to yo r USB port, short pin TX (TTL O t) to RX (TTL In) on the termination board,
and then send commands from the 232Analyzer software. Yo sho ld receive an echo
of the commands sent. By performing a simple loopback test like this, yo can test
both the transmitter and receiver of the USB-TTL3.3V converter. This is very helpf l
when yo are in do bt abo t the performance of yo r converter.